Informatics and Applications

2026, Volume 20, Issue 1, pp 64-72

ORDERING OF MULTIVARIATE LONGITUDINAL DATA BASED ON COINTEGRATION ANALYSIS

  • M. P. Krivenko

Abstract

In the processing of longitudinal data, multivariate cointegration analysis methods deserve for special attention identifying long-term relationships between several nonstationary time series. In relation to the problems of econometrics, the article discusses the application of cointegration analysis to the ranking of objects based on a single indicator: the degrees of connectivity between the components of an observed multidimensional time series.
With this approach, it is natural to process a couple of time series. For higher-dimensional cases, it is proposed to apply specific data transformations to obtain the required structure of the object or turn to multidimensional cointegration analysis followed by a multidimensional ordering problem formulation. The data for the experiments contained detailed characteristics of investment activity by region: investment in fixed assets (Inv), gross regional product (Prod), and number of employed people. To find a cointegrating vector for the data of each subject, a regression of the Prod process on Inv is constructed, for which the coefficient at Inv can be interpreted as the relate coefficient r processes of investment and gross regional product with the subsequent use of this characteristic as an indicator of the efficiency of economic activity, in particular, to build a rating of regions. In the course of regression analysis, not only an estimate of r* is obtained but also its selective characteristics become known, i. e., it becomes possible to get an idea of the significance of differences between individual r* values.

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